EP 0261390 B1 19931124 - Matrix concatenation in a graphics display system.
Title (en)
Matrix concatenation in a graphics display system.
Title (de)
Aneinanderreihung von Matrizen in einem Grafiksichtsystem.
Title (fr)
Concaténation de matrices dans un système d'affichage graphique.
Publication
Application
Priority
US 91272486 A 19860926
Abstract (en)
[origin: EP0261390A2] To avoid the overflow problem, in a graphics display system which employs matrix concatenation for coordinate transformation and matrix element precision equal to that inherent to the system, which can cause an out-of-bounds location of a data element, number translation shift factors are introduced for the last row of the matrix which when used to operate on matrix elements. This will maintain the elements within the physical boundaries of the graphics base by preventing overflow. The disclosed modification can be implemented in microcode in a commercially availably graphics display system such as the IBM 5080 Graphics System.
IPC 1-7
IPC 8 full level
G06F 7/548 (2006.01); G06F 17/16 (2006.01); G06T 11/00 (2006.01)
CPC (source: EP US)
G06F 7/548 (2013.01 - EP US); G06F 17/16 (2013.01 - EP US); G06F 7/4991 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0261390 A2 19880330; EP 0261390 A3 19910515; EP 0261390 B1 19931124; DE 3788260 D1 19940105; DE 3788260 T2 19940519; JP H0776987 B2 19950816; JP S6385988 A 19880416; US 4805117 A 19890214
DOCDB simple family (application)
EP 87111955 A 19870818; DE 3788260 T 19870818; JP 13201787 A 19870529; US 91272486 A 19860926